Bottle vending machine



Oct. 9, 1951 w. w. BowMAN v BOTTLE vENniuG MACHINE Filed Maj'f s, 1946 Sheets-Sheet'.

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I .Walde Z130/dma# HTTNEXS Oct. 9, 1951- w. w. owMAN BOTTLE VENDING MACHINE 6 SheetsfSheet 2 171%',2

y Filed May 3, 1946 INVENTOR.

me /awmm O-t. 9, 1951 v w. wgBQwMAN 2,570,516

l BOTTLE .VENDING MACHINE Filed May s, 194e v e sheets-sheet :s

0t- 9, 1951` w. w. BowMAN 2,570,516 l BOTTLE VENDING MACHINE 6 Sheets-Sheet 4 Filed May s, 1945 W. W. BOWMAN BOTTLE VENDING MACHINE Oct 9, 1951 6 Sheets-Sheet 5 Filed May A5, 1946 Oct. 9, 1951 w, w, BowMAN A 2,570,516

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m m m if Patented Oct. 9, 1951 UN ITED v 2,570,516 nnzrrnnvnnpmo MACHINE Wade W. Bowman, Dallas, Tex.

Applicanggnay. 3 1946, serial No. 667,102

The invention relates `to vending machines and` more particularly to yanew and useful machine for automatically Avending bottles,

Objects and advantages of thei set forth in part hereinafter Vand part ,WW1l

be obvious Xherefrom, ormay beflearned by pra c tice with the invention,v theysarne be realized and attained by means o ffthe'instruinentalities and combinations-'painted mi in fhearrended claims. structions, arrangements, Iepnib-i'riations and provements herein shown and described. A The accompanying drawings. .referred te herein and constituting apart 'her'eoiL illustra embodiment o f. the inventio nd t get the description, .Serre i@ 'erleief vthe. rfigrls of the invention,

Of the drawings: Fig- 1 is a fragmentary side elevaiien'p maf "a machine which is designed to be serviced or supplied with fresh stock with a minimum of dif-vr ficulty andV interruption.

Another major object is to provide a rbottle ,vending machine Vwherein a reserve supply of i' bottles is always maintained at theidesired vend;

The inventionconsists the novel'partshcon-q 'times so that when 'the machine 'has delivered chine embodying the` nverltieafihe pririgipalv` mechanisms thereof being s hownjlin seetion;

Fig 2 is a .horizeeiel 'septies or lise @fief Fig. 1;

Figi 3 i5 an @913mm det'll, Vltcal. COS- Section Online'. 3]-.3 Off Fig- 11- 'Showingfiari ability f the' meeneem *nieuwe seesmees shapes of bottles; f

Figjl is an enlarged fragmentary detail `in vertical section of the'tray and gate mechanisn'for storing and feedingA bottles; Y i

Fig. 5 is a vertical seetinn'line lli---of Fig.- 4;

Fig. 6 is a fragmentary vtransverse vertical sec'- tion of a modified form of vgate Vand control for the bottle trays; and y Fig. -7 is an elevation of a modified form of switch mounting on the delivery door;` v

Fig. 8 is a partially diagrammatic front Yeleva.- tion of a coin control mechanis1n for use with the invention; f l v 7 Fig. 9 is a fragmentary vertical section on line 9-9 of Fig. 8;v and f f 5" Fig.- 10 is @Wiring diagram gf Said wir Control.:

The invention is'directed to nproi'liding an iin;

proved bottle `vending maehine, preferably coin- Comores weer. 'weer wie a anni@ bf Change Ver adjustment., t9 handle a ,very wie@ variety 0f Sizes @drange Oibqiils' @es @biagi of the invention is to provide a-'majcljiine` one on individual step-by-step motordriven conhaving very largebottie-holding eapa'city h in a plurality of sizes and shapes ofrbgttlesmay be vended as selected by the customer so that beverages or liquids of differentflavoifs"er menu facwr@ @an be 'obiaeedjiren ih lSeite ma Anoihrgbieci 0f t,

avenue Y1s i9 ,prevideenhg ing temperature regardless of the number ofy bottles which have been withdrawn frorntliev nia-v chine. That is, my invention provides for main.- taininga'reserve quantity of chilled bottles at all bottles down to thereserve quantity, that quantity will remain in the machine and be kept at the vending' temperatura Consequently,y after the machine Ahas been reloaded with fresh bottles, it is immediately ready to deliver a properly chilled bottle to the'v next customer without 1re--r quiring a chilling period to cool olf the new supply before vending is recommened. This feature ofthe invention makes it p-ossibleto obtain promptly aA properly chilled drinl; regardless of the time interval between exhaustion of the avail@ ofv power` and providing for maximum simplici y V of construction and maintenance. 'In' this aspect of the machine, the inventionY further provides for insuring that the bottles will always Yrnove evenly on their sides without jamming, twisting or bridging, regardless of the external contour 0r breil@ 0f the Various bottles SO ,1011535 ifeir general cross-section is e essentially circular. Means are ,also provided for insuring .that one and only one bottle will. be delivered from the machine at a time, this feature of the'invention including an improved delivery doormechanism, which mechanism also. is designed to operate io prevent access into the interior of the machine adiacenti@ Ydelivery pert- Generally described, the vending machine com-- Prises? ,Closed cabinet havr1"` oiebr more delivery dorsto which the bottles are fed ene-by:

veyors, said eonveyors and the. feeding units the bein'garranged in parallel'b-anks within china 1.3i Suitable oin-vntrlled Circuiti? the ,washing is S0. designed themen/011e 0f the several bottle conveyors will be actuated at one time, depending upon the flavor selected by the cusomer when the coin is inserted. If all banks of the machine are loaded with bottles containing the same beverage, said coin-control mechanism is designed to successively actuate the conveyors in turn so that bottles will be withdrawn uniformly from each of the several supply magazines containing same.

Each of the bottle conveyors is housed within a refrigerated chamber so that all of the bottles on each conveyor will be maintained at the desired low temperature. In the upper` part of the cabinet or casing above a bottle conveyor, the botlles to be supplied to said conveyor are carried in a plurality of superposed slightly inclined trays or shelves, the lower ends of which all communicate with a vertically-disposed delivery chute which feeds the bottles one-by-one onto the upper flight of the chilled conveyor. The movements of the botles in said trays and in said vertical delivery chute are effected entirely by gravity and control means, governed by the weight of the bottles, are provided whereby the bottles lying in the uppermost tray are all-fed out first and thereafter the bottles in each successively lower tray are fed into the vertical chute until the entire number of bottles in the trays are delivered one-by-one to the conveyor below. When the last bottle in the upper or magazine portion of the cabinet has been fed to the chilled conveyor, the downward movement of said last bottle automatically causes the conveyor motor to be shut 01T so that that conveyor will not operate again until a fresh supply of bottles has been furnished to the magazine trays above it. By this means maintenance of a chilled reserve of bo L-tles is assured.

It will be understood that the foregoing general description and the following detailed description as well are exemplary and explanatory but are not restrictive of the invention.

Referring now in detail to the present preferred embodiment illustrated by way of example in the accompanying drawings, the vending machine, as shown in Figs. 1 and 2, is designed to accommodate two banks or units of bottle storing and feeding equipment arranged in parallel and this is the preferred form of the machine, although i'. will be understood that a higher number of such units may be provided as desired in such cases and on the other hand, many of the improved features of the invention are also applicable to a sinfrle unit. As shown, the machine contains an outer rectangular cabinet having top I, side walls 2 and 3, rear wall il, frort wa`l 5 and bottom 6. portion of the front wall 5 is cut awav to provide an opening for a front access door I 0, which is suitably hinged to open from one side of the cabinet. the inner face of the door being flush with the inner face of the front wall 5 and the ou'er face thereof extending lbeyond the outer face of the wall 5 and provided with overlapping edges as shown. Any suitable sealingr means suc" as rubber beading around the closing edges of the door is preferably provided for cushioning and sealing same when closed.

Each of the two bottle-storing and conveying units shown is identical in construction so that, for convenience, only one will be described in detail. Each of said bottle-storing and conveying units comprises an upper or storage section generally indicated at II and a lower chilling,

conveying and delivery section generally indi- Abou. two-thirds of the upper` to the rear of the inner front wall I4 and generally supported by suspension from the horizontal dividing platform I3 and the space housed by the walls 2, 3, 4 and I 4, is refrigerated and maintained at a constant low temperature by any suitable refrigerating means, not shown. Preferably said refrigerating mechanism is seated in the lowermost portion of the main cabinet and refrigerating coils will lead therefrom around and adjacent to the elements within the seC-,

tion I2 so that the bottles on the conveyors therein will be kept at the desired 10W temperature. Suitable thermostat controls will be provided for maintaining said temperature at the desired point. It will be understood that the specific means for refrigerating the section I2 of the machine constitutes no part of the invention per se. Alternatively, the chilling'actionV may be carried generally throughout the upper section II so'that a preliminary cooling may be imparted to bottles on the trays, especially the lower ones.

Referring now in detail to the bottle-supporting and feeding means contained within the storage section I I, the saine comprises a plurality of superposed shelves or trays I9 formed of sheet metal or similar light strong material having at bottoms 2G, upstanding walls 2| adjacent the bottom ends of the bottles and relatively short upstanding walls or lips 22 adjacent the top or neck end of said bottles. As appears from the drawings, the bottles are adapted to lie on their sides on the bottoms of said trays and to move therealong by gravity. The several trays are supported in superposed spaced relation in the upper section of the cabinet and are all inclined at a relatively gentle angle downwardly and rearwardly With respect to the Vfore and aft axis of the cabinet. The front or upper ends of the several trays are supported from uprights 25, the lower L-shaped ends 26 of which rest iidii and are fastened to the upper face of dividing. platform I3. Horizontal cross bolts 21 extend through the side walls of the trays adjacent the upper ends thereof and are fastened at either end to the outer faces of the uprights 25 as shown. The trays may be readily removed from said support by loosening nuts 28 at either end of the supporting bolts 21.

Said trays are also supported adjacent their lower ends bymeans of cross-bolts 30 which underlie the bottoms 2D of the trays and are fixed by means of nuts 3'Il in uprights 32 which are also supported Aat their flanged bottoms on the spacer I3. It will be observed that the uprights 25 and 32 are provided with a pluralityof bolt holes adjacent the tray positions so that the trays may be spaced farther apart or closer together as desired to accommodate different. sizes of bottles.

The lower or rear ends of the several trays'l .I9 all terminate on a vertical line short of the -rear wall 33 of the upper section SI. While, as. shown,i said rear wall is spaced inwardly from the bottles against the lower end of the trigger 66 is imparted to the upper end of the plate 'it and thus considerably multiplied so that a force sufficient to keep the gate 60 closed is exerted thereagainst at all times while the trigger B bears against bottles in the vertical chute. It will be noted that in its closed position (as shown in the lower part of Fig. 6) the lowermost bottle on the tray I9 bears against the corner formed by the anges 6| and 62 of the gate and thus does not bear directly against the forward face of the gate 60 itself.

When the uppermostV bottle in the vertical chute has passed the lower end of the trigger 56, absence of restraint against said trigger then permits the gate 60 to swing, under the pressure of the bottles on its tray, outwardly and upwardly into the position shown in the upper part of Fig. 6. By such movement the upper end of the plate 'I0 forces the trigger 6G upwardly and forwardly so that it lies in an upright position well above the gate 60.

It will be observed that this form of gate and trigger construction is considerably simpler in construction and operation from that previously shown and described. The number of parts is less and there is no spring mounting of any of the parts. Likewise there is no positive latching of the gates, all the parts being directly and positively controlled bv the presence and weight of the bottles bearing against them.

In both forms of said gate construction, it will be noted that when the gate has been opened. it overlies the top of the column of bottles in the vertical chute and thus acts as an inclined guard or canopy, tending to guide the bottles downwardly as they roll off the trav. These bottles often move quite rapidly from the end of the tray. while the bottles in the vertical chute are moving slowly downwardly. Conseouentlv a bottle will sometimes tend to be forced. upward in the vertical chute by tbe pressure of tbe bottles in the trav behind it. The inf-,lined lower surface of the gate tends to prevent such bottle from being so forced upwardly and becoming locked in the vertical channel between the rear wall 33 and the next oncoming bottle in the trav. Without sucb precaution, it has been found that a bottle will sometimes be locked and snsnende'l in the vertical. chute. while the bottles below it feed along. This ultimately causes the lower travs to open and feed bottles before the upper trav has been emptied. Ultimately, the suspended bottle will shake loose and fall onto the opened gate below .and thus lock the l`nttles in tbe lower trav which ball opened prematurely. As stated, the construction of my gate prevents this from happening.

In tbe previous attempts to feed and deliver bottles which are disposed to roll on their sides, great difficulty bas been encountered in avoiding uneven feeding movements. Due to the far-,t that many commercial bottles are not truly cylindrical and all of them have smaller necks than bases. thev tend more or less to move irregularly instead of as true cylinders. This is particularly true of bottles having relatively long tapered necks such as that illustrated bv the longer bottle shown in Fig. 3. Such bottles tend, when moving down inclined surfaces to tilt toward the neck end due to the fact that their basic outline is that of a cone rather than a cylinder. If this tendency is not corrected a stack of such bottles in an inclined or vertical chute will ultimately cause the group to tilt so that the uppermost bottles will ultimately be found very badly askew. Moreover the base end, whichis of the greatest diameter, tends to roll more rapidly than the neck end thereby introducing further aberrations into the desired cylindrical or straight rolling motion. Another factor which tends to introduce irregularities into the movements of bottles so shaped and disposed is the tendency of the bottom ends, when bearing against a wall or other vertical surfaces to be retarded by the friction of such contact. All of these effects, taken together, in greater or less degree depending upon the shapes and profiles of the bottles, cause them to move so irregularly that they cannot be depended upon to feed smoothly and uniformly by gravity. Hence bottle vending machines in the past have largely resorted to positive belt feeds or mounting of the bottles on their bottom ends or other expedients which are cumbersome and expensive and complicated.

The present invention provides means for counteracting the tendency of bottles lying on their sides from rolling irregularly due tothe factors described above. Referring first to the tendency of tbe bottoms of the. bottles to be re; tarded by frictional contact with vertical walls, Fig. 3 illustrates a very simple device for overcoming this diiculty. As shown, the vertical wall 2| which contains the bottoms of the bottles in the trays I9 is prevented from substantial frictional contact with the bottoms of the bottles by means of a narrow spacer member B0 which extends a short distance up Yfrom the bottom of the tray and thus prevents all but a small part of the base of the bottle from having frictional contact with tbe vertical wall. Said spacer 8D may be a short flat plate as shown or may instead be an inclined surface across the rectangular corner between the walls 20 and 2 l. I bave. found that this simple arrangement will entirely overcomer the irregularities of movement heretofore caused bv contact of tbe bottoms of the bottles against such vertical wall. In the case of many bottles. such as tbe Coca Cola bottle illustrated in broken lines in Fig. 3. no other device is needed to insure regular cylindrical rolling motion. This is due to the. fact that the Coca Cola bottle is essentially cylindrical, the widest points or shoulders A and B being spaced suflicientlv far apart that the center of gravity of the lled bottle lies well between them and it will thus roll fairly true.

However. with the longer bottle illustrated by the full line shape shown in Fig. 3 (which is the profile of the present Pepsi Cola bottle), much greater difcultv is encountered because of the conical outline and the tendency of the long neck to project so far beyond the cylindrical portion of the bottle. To overcome these factors, I provide at the neck end ofthe shelf I3 an upstanding flange 8| attached to and in prolongation of the lip 22. Said flange 8i in its minimum height is designed to support the neck of the bottle, which overhangs it to some extent, so that the bottle will lie substantially level, i. e. parallel to its long axis on the tray bottom 20. I have found, however, thatif said flange 8| be maintained at a uniform height throughout the length of the tray, the bottles will still tend seriously to turn and slide askew in their movement along the tray. Accordingly, I provide means for recurrently straightening out each bottle as it rolls and slides down the tray by successively retarding or holding back the neck end thereof and then intermit- .fluently allowingit to catch up and Straigbtennoutv{[IlgOllflel Words; by properly' Shaping the 119,136.1' edgeorcontour of the-flange l I am able to irn- DafI-t ,successive Correctly@ motions to the neck of the .bottle as ,itr travels along-the tray so `that K 5 Atbe-floottles will travel essentially' like true ovl,- indersasthey movedown the-trav. Vl-Suoh ashape .or vilange is illustrated .in Eig. 1 .Where it Willloe seenithat the unpergede'e .of the -iiange` ,8l nrovided first at ,82' with a Straight portion of .mum height. -NeXt the flange 8l is slopedju-p- "',wardlyat 83 tojcatch and' retard the neck of ithe bottle Next .an Aelevated .straight portionyt is y.providedand nexta downwardly ineline'd-ilainp 35.Y Next eoines-,a Ndepressed straight noitionr and'then the above-described elevated portion iS f -zessentiallv repea.,te i` at f This Siialoeoi. contour of the flange ,Baterias been arrived at ernpirioally ,after millon experimentation and` I have ,found that with;Y it all .-bottiesyieeardlees; of -tiieinieneth ,.andfshape, will be causedto travel essentiallyzrlega 1112.111131 ,aiidtrnight nlolginlined traysfas shown.

iowevenit `will be understood :that the invengtionriS-not Sneoioallv limitedto tnepartioulai forum of neck-guiding flange shown `and describgedr,

10 .vdvgnebottle at a time. As willfbe clear from Fig. 1, the bottles are advanced' steploy-step by movementoi' the belt ,9J until they tlavelarounl the forward rollerl where they come against the .downwardly kand rearwardly curved plate IilI which is Suspended Stott ,frentes bottom `of spacer t3. baidplate Iii is curved around the roller 9J- andthe'n has a `horizontal.portion [02 along which the bottles are directed 'rearwardly 0.by the flights l to thefrear end'of said plate Any means for imparting successivecorrective Y .l movements.- to Zine-bottle .neoka ases/.irregularities 4in fthe. alleine oi their Supporting: sor-faoefk or by vvarying the friction orr otherretardant-actionon the topends ofthe bott1es,jmay be employed. For `exainnle.,finterinittent. resilient or liizietionalnieskwnjthe verticalchuteftheir neclgs. wllloe arstedend eeidedfeolae to impart ang-ltimate'iy guiar-Vertical' motion to the'nottleain the @liniefaetion' is aeoomniiehed. bv ,Causing the bottles to bear. aeainStVertioal reilen. 'infie andoadjacent theV rear wall |03 of the section I2, said Vwall being also suspended from the plate I3. The second conveyor belt 96 lies suitably space-kdA below horizontal plate `[U2 andoris designed to receivethe bottle Iwhich pushed from the rear :kend of sadplate by the movement'o the upperconveyor. Conveyor 95 runsV parallel to and in thesame direction as'vcon'veyor Saand flights `I0@ similarly spaced to enga'gewand move' the bottles forwardly. By suitable chain 'ad `,Sprocket linkage' as .hQWn the Q-Wl'd Ysprocket roller- I of conveyor 96 also'driven from motor 98. Thus it will-be seen that the ,bottles by means of. these two conveyors are advanced s tep-b'ylstep upon each energizationof niotor sootrhat ultimately the bottle whichhas `been Longest in lthe rerrigerating chamber I2 reaches the vdelivery position at thefrontend of conveyor 96. lWhile the conveyor asshown corn- 30prises threeV superposed flights, a lesser `number mernbersQIi-and 9I in the vertical chute adgj'ax nt'45 @negende .ofy eaohfeetof tiara-The, Ia'ilaisii Wiiih .,oontain;t.he;baee ends of 'the bottles Vmaybe let Yeitioai -fplates performing essentially tile.: Sain@ v'g ,'9- x Ulm/'.3 not; fQllld it 116995531X mhs. arlale' linen to have a weer-member ooriesloondinei to eine niemeer 8 fbeoauee fthe vbottles are. falling 1 essentially vertically. Ijloweverztherailsl which engage the necksA ,of lthe longer; ,bottlesl .sii-fines. the Pepsi Cola bottlesshovwnin-lEig.3,.lwill bei' Vloprovided with.profiles..essentiallyl .l'ike'those of the flanges 8| aSfShQnaend will neriofmthe equivi`aient functionon the vertically moving bottles".

' Referring now t the bottle conveying Yand die- Y liyery vrr'iecha'nisfr'n .contained A.in the yreirig'raltd suitable` openings being.,provided .for; the; chain f, 99to lpass :through ,saidt wall. f; The v`conveyor belt S5 is, provided; With.,a `plurality of outstanding ..lights :.:I im; saidt ights'i. being spaced; :soi as ;.ac

may be found sufficient, especially where space Tis an important factor. vIn suchl case a single h or .izontal flight from the vertical chute to tu@ deliveiydoor may be used.

I ilvleans'rare provided for causing the Y.foremost bottle-on conveyor Sto bedelivered `vfrom the niachinjf when the motor v9 8 -is energized bydeposit offaV coin in the coin controltherefor. Said delivery meansincludes a downwardly ,fQil' -warolly inclined receiving tray I I-:Which'extends v forwardly from a delivery port -III in 4wall `I4 vthrouglfia suitable openingv H2 in outer wall. `5 of theicabinet just below the bottomof thehaccessgdoor I0. The tray llprojects asuicient distance beyond the opening IIZjsothat abottle delivered into the rear end of thetray-Willroll forward and be accessible for removal byhand v fro'rnothe forwardrendof thetray .outside the lwall-5,. saidtray being provded'with a terminal retainingy lip i I I3.

Referring now to the preferred means'for automatically ldelivering thel bottle into tray IID Y=from' theaend :ofconveyor 96, II-,provide anautoniatic, normally locked door H15 which when ,closed liesnush with wall VIii and is adapted' to .drop under, the weight ofjag-bottle to'perinitsame LYto. roll ontortrayA I It. The Adoor Il is designed l,to move downwardly through a 1slotor A.opening *.IIIf formed'at the rearedge of tray IIlLsaid movement being permitted 4 by Yvirtue vof the.

mountingofv the door at theforward end of hori- *nontaily eXtending lever arm. Hl. Saiol lever is fulcrumed-at -I I8 near the reanof theicabinetso ...thatgdownward movementxof the door ,wilrtake :place-:almost in a vertieal piane- Tnerearwardlv extenlinanortion ii 9 loi the` lever is adiuetaoly Weighted ,at IZB. sogas normallyfto. hold-the ldoor .l in lits `elevated position.

ill/leans are providedl forrvncrmallyloclging the .noon iii-Said elevatedoio-oserl position and per- ,mitting sameto open only when a bottle is delivered theretobymovernent of the` conveyon.

Means area-also' providedsfor cat singlithemotor e.98...fto;;becdefenergized as soonas the;bottlei,has

:.euratelyato receive'between-themfoneand only`o75-beerrloausedl'to roll olf .the ccnvegorx," thereby preventing the feeding of more than one bottle while the door is opened. As embodied, the door is normally locked against opening movement by a latch |25, said latch being connected for locking and unlocking movement of the lever with an actuating trigger or lever member |26 which normally lies in an elevated position in the path of an oncoming bottle delivered from the end of the conveyor S6. When the bottle rolls off the conveyor it encounters and depresses the trigger |26 thereby moving latch |25 out of engagement with fixed bar |21 and permitting the door ||5 to sink due to the weight of the bottle on the trigger member |26; As the door ||5 and inclined trigger |26'sink together under the weight of the bottle, the bottle rolis out onto tray ||D and the door immediately swings back into elevated position and relocks. The latch |25 and the trigger |26 are spring urged to return to locking position.

Above the upper edge of the door and mounted on the inner face of wall 4 is a plate |36 which is so positioned as to engage any part of the bottle as same rolls off the conveyor and onto the trigger plate |26. Said plate |30 is connected to a horizontally disposed rod I3| which is slidably movable through a conforming aperture |32 in Wall |13. The rod |3| is somewhat longer than the thickness of wall Ill and has mounted at its outer end an upwardly projecting rigid member |33. When the rod I3| has been moved outwardly by contact with the bottle, the upper end of member |33 is designed to contact and move arm |35 of a normally open microswitch |36, the closing of which switch results in the interruption of the circuit of conveyor motor 98 as hereinafter described. Consequently, the movement described causes the motor and conveyor to be stopped as the bottle is delivered from the machine and hence any possibility of a second bottle being delivered while the door is opened is obviated. As soon as the bottle has moved past the movable contact plate I 30, the rod |3I is slid backwardly into the cabinet by means of a suitable spring |3`| so that the switch |36 will open again and the control ltherefor be in position to encounter the next bottle.

A modiiied arrangement for the motor control switch is shown in Fig. '7. rlhe micro-switch |36 is mounted on the wall M and is arranged in a circuit similar to switch |36. arm |31 prime extends from a block |38 prime on the outer face of the delivery door to actuate switch |36 prime. The arm |31 prime, which is preferably provided with a roller, holds the switch opensc long as the door is in its upper or closed position. As soon as the door goes down to open, the arm moves oif the block and the switch is closed to bring about action resulting to cut the current to the conveyor motor. switch is again opened when the door returns.

It will be understood that the above-described door construction has numerous advantages. The lock therefor being inside the cabinet, it is impossible for anyone outside to reach into or gain access to the interior of the machine to get a bottle, except in the normal way. The vertical movement of the door and its arrangement is such that a minimum amount of warm air can get into the refrigerated chamber. Moreover, it will be noted that both the switch |36- and the opening of the door itself are actuated solely by the weight of the bottle being ejected.

That feature of the invention which assures maintenance of a chilled reserve of bottles re- An operating The g 12 tainedon the conveyor, after the supply in the overhead section has been exhausted, will now be described. It is desired to stop the feed of bottles by breaking the power circuit for conveyor motor 38 as soon as the last bottle has been fed from the bottom tray I9, so that when there are no more bottles in the storage section the machine Will stop delivering bottles. At that point in the operation the flights of the horizontal conveyor will remain charged with bottles, which Will be maintained at the temperature of refrigeration in the thermostatically controlled chilling section I2, but the machine will deliver no more bottles into the dispensing tray I |3 until the trays I9, or at least some of them, have been replenished. As soon as some fresh bottles, regardless of how many, have been placed in the bottom tray 20, the motor circuit will be restored so that-dispensing can recommence. The bottles then delivered will be those from the reserve supply which have been resting on the horizontal conveyor, so that they will always be at the chilled temperature no matter how quickly the machine has been refilled and no matter how many Warm bottles have been added by the reloading.

The embodied means for accomplishing this object of the invention comprises a micro-switch |63 in the circuit for conveyor motor 98 which is normally closed by weight of bottles in the lowermost tray. Said switch rests on the partition I3 and underlies the lower end portion of the bottom tray |9. The switch is designed to open only when the last bottle has been fed oiic the bottom tray I9. For that purpose the lower end portion of the bottom 2B of said bottom tray is formed as a separate, hinged plate split into two separate parallel leaves |55 and |56 both mounted to extend in prolongation of -bottom 23 and hinged to turn about horizontal pivot rod |58 at the end of bottom plate 20. A hinge spring |56 is disposed to urge the plates |55, |56 upward, said plates normally being held flat in prolongation of the tray bottom 20 by the weight of the bottles resting thereupon. This general structure is all supported by an L-shaped foot |60 formed at the bottom of each of the uprights 32. Cross rod |6| supports the lower end of the bottom tray 26 and the hinge pin |56 is also supported at either end in said plates |60. Latch engaging hasp d'7' is formed at the rear end of plate |55 in the same manner as with the upper tray bottoms. Switch |63 underlies plate |55 so that when the last bottle has rolled ofi the end of said plate, the rising of the plate will open the switch and thus cut the conveyor motor.

For the purpose of operating the telltale light and lguard. for blocking the coin chute, hereinafter described, a switch |56 is provided mounted on the outside of wall I4. The operating varm |5| of said switch is fixed to and projects upwardly from near one end of a slidable actuator rod |52 which extends through Wall I4 and said rod is normally urged by spring |53 toward the left as shown in Fig. 1, to switch closed position. The rear or inner end of switch rod |52 is suspended from the bottom ofy plate |56 by means of an apertured bracket plate |65, through which said rod is mounted to slide. A stop nut |66 is fixed to the end of the rod so that, as shown in Fig. 4, the rising of plate |56 will cause bracket plate |65 to plush against nut |66 andthus retract the rod |52 to close switch |56 and operate the telltale light and block for the coin chute. Plate |55 is designedly made longer than plate |56 so A:motor 2 l 5.

1"-3 that the last bottleor"thebottoniltray"will-fall freely from the end of the tray onto thelv conveyor below, but the bottleconveyor motor will remain energized until the last possible'contact with the falling bottle has-been `relinquished so that the'nal bottle at the front end -of the conveyor will be delivered with certainty' before the motor is deenergized.

There is shown in Figs. 8, 9Av and 10 an illustrative form of coin control mechanisml adapted for use with the vending machine hereinabove described. Said coin control mechanism is adapted to receive coins designated to 'select bottles from either conveying unit'of :ther machine. -In the event the machine is loaded with bottles of identical content and beverage in both units, then said control mechanism is adapted to' alternately draw on the two delivery units soas-to-` empty the ma" chine evenly. Means may also be provided for indicating when either bottle supply unit has been emptied and to prevent feeding coins to actuate said unit when it is emptied.-

As embodied, the coin control mechanism comprises two coin chutes 200 and corresponding to the two units of the machine. Said chutes are of Siamese construction joining in a common chute 233 at their bottom' part,- which chute leads into a bad coin detector or slug ejector which is of `conventional design and not shown in detail. `Bad coins arerejected through the rejection chute 205. From the bottom of the slug ejector 204 superposed crosswise coins chutes 295 and 20'! are pivotallymounted on a bar 203 so that by tilting same as shown in Fig. 9 one or the other of said cross chutes-will receive a coin from the detector unit 201i. The bottoms "of the pivoted chutesl 205 and 201v communicate respectively with vertical chutes 209 and 2 I 0, in each of which are positioned motor control switchesr for the two conveyor motors.

' -"-l\/ie"ais are `provided for selectivelytilting the cross chutes 256 and 201 so Yas to direct av coin to the appropriate" motor switch chute 209 or 2|0 as determined bythe deposit-of the'coin' in theselected chutes-200 0r 2|llf- That is, if the chute 20S) corresponds to Coca-Colaflavor carried by the right hand unit of the machine,-the dropping of a coin into the chute 200 will cause the coin ulti'- mately to fall into motor control-chute 209 there to 'actuatethe operating switch for conveyor If the coin isn dropped in the other chute ZEI, corresponding to the Pepsi-Cola unit at the left of the machine, the coin will be directed into the motor control chute 2I0 toenergize motor 215 for that-unit. The motors 215 and 2 l each correspond to a motor 98 -'shownand described in Fig. 1 in connection with one unit of the machine. The means for effecting this selec tive control comprises in the illustrative form shown a coin operated gravity switch 220 in the 4chute 200 Vand a similar switch 22| in chute 20|.

As willappear in Fig. 9 each of the chutes 200 and 20| are divided in'an intermedial portionof their lengths into superposed parallel channels 222 and 223- and divider or deector plates'22ll` arepivotally mounted at the throat or t'op endsof said v divided chutes.- The switches 22). and 22| lie in the outer channels 223 of said divided chutes so that they are actuated only inthe event switch plate 22fis in the rear position as shown in Fig. 9. A similar delector plate 225` isprovided in coin chute 20| and is mounted toliein ,the lopposite sense to that-of plate224 inchute 200. An actuating. bar 2:26- Centrally. .Pivotallr mounted ifs plates 224 and 225 by rocking movement' through yslot-lconrleetior'1- with-'levers attached to theswitch platesi-asshown-in Figsl. 8-and 9. The barl 223lis adapted-toetje rocked by a lrotary cam 22'l.whichiis adapted-to be' operated" by the yokeduarml'228 A'carried' '-bythe, armature, of solenoid-31229. Said fslenoidf 2 29?' -isalso provided withlaalowerarm 23 '0'5- carried byA 'its `armature@whiclr`v isi: linked to operate" arotorycalm or crankv 23 |',`1 whichicrank is'- iconriected-y to rock crossr-shaftf 2-081and :thereby fccntr'olftheV position of the two Lipivotedafcross cl tes" 206l-and-20. As shown, 'thefarms'2281 and A230'- -re yokedto'.engageprojections onrthe cams 2-2-1/v` andr 23 'respectively torrot'ate the; cams; and bai-'ii 225iarid-` shaftik 20 8i: respectivelywhen oid -22'9is`ienergized and-1arms5i22iiamt` 2:30 ed-upwardly. Uponde-energization ofesorle.- heid?V 2129.thearms228; and 23.0.;'rnove downwardly byigravity, and. thexcamsi22f| and 23 Irresumetheir Cfo'rlmerl positions by action of theweightsioper:

atingOrI-.the axes-thereof, as shown..

' Consideringithe. operation tof. ther mechanismgso far describedlwhena coin is;dr.opped. into; chute 200g-'iti willnfall intol contact; with'switchi amr 22.0, assuming that thedeflector; plate. 224 isi-in Lthe 'rear' position-- as shownin Fig. 9. Contactwith -switeh22will1close the circuit. to solenoid 2129 causingpl'ate 22d-Ito swing forwardiandthereby open the throat of parallel .channelf222. .Simult'aneously-,l thepdeflector. plate 225 inzchute-i20l will? bel-r'rioved` Yto`A open its switch. channel-.2123 fsolth'at theneXtcoin dropped into chute20j| Fw-ill Eoperate' switch'f22i. 1 Ir fthei secondpcoinbeaf also rdito-chute 2-@0 it= will pass. directly downwardly throughchuta 222` by passingY switchV 220;.1and

-thus I'not afecting the solenoid 229. The-venere gizationN of the solenoid, by :operationj of switch '22 lli-as stated; willalsocause crossrbar 2.08 .tbe rocked/tof position the chuteY ZBG-asshDWn-fin Figli 9i sothat the coin willfallinto correspond,-

in llconvely'or motorchute 209 as shown.. VHow.-

y"a'ndactuate switch 22|r the deflector platej225 `rto hold a-coin, Asuchas C, in motor-switchzcrosing Yposition untilthe conveyor hasl fbeenmovedlto fdeiiveronebottle throughsthedelivery Aport .Ill by actuation of door |15. Themoton'boflthe bottle, as previously described, concurrentlyiop'erj 'ates motor control -switch iv3i5-to breakthe motor 'energizing circuit. The embodied-:- meansi: for effecting Vthis operationis shown AinBigs;-L.8,z 9 land? lfcornprising a pivotedJ-switch-.amn 235 'raga-instwhichtlie coin -C lies- -a-nd in sch'l position holds the circuit closed for -Ymot'oii 215. A coin-retarding member 236 is retractably mounted'against the face ofA chute 209, said-"member having a pin 231 which projects into the chute 209 and in its innermost position serves-t0 hold the coin against the switch bar 235. -When member 236 is Vretracted the coin C vis released vand is free to fall out of chute 209,"thereby allowing switch arm 235 to spring back and open the motor circuit. The embodied means for `,so controlling the 'movement yof coinV `retarding member 236 comprises a solen'oid"2|l0,""thel armat'u're `24| 'of which is' connected to" aiIink '242 which serves to rock member 23 about its upper pivot 236. The solenoid 240 is energized upon the closing of switch |36 by action of the bottle being delivered, as will be clear from the circuit connections shown in Fig. 10. A similar coin retarding member 250 is provided for coin chute 2||l and is actuated by a rocker bar 25| connected to the solenoid armature as shown.

In accordance with the invention, the coin control circuit is also designed to cooperate with the controls for switches |56 so that either conveyor motor circuit will be wholly de-energized when the last bottle has been fed from the lowermost tray I9 onto the corresponding conveyor as previously described. For this purpose switches |63 are placed across the respective main lines so as to break the motor control circuit for motor 2|5 or 2|6 in series therewith. The closing of a switch |50 also upon feeding the last bottle from the lowermost tray I9 serves to energize the circuit for a telltale light 250 so that when thelast bottle has been fed, as described, by that unit the light will be lit adjacent the coin chute to yindicate that that unit has been emptied. Similarly a coin chute bar 26| is allowed to drop when solenoid 252 in the same circuit is energized to block access to the corresponding coin chute 200.

It rremains to describe how the mechanism is adapted to alternate theoperation of motors 2|5 and 2|S-when the bottles of beverage in the two conveyor units are identical. For this purpose the cross bar 226 of the solenoid-operated coin .switch mechanism is removed and a single coin yisused with the plate 224 therein set to deflect -all coins through chute 223, thereby causing the coins in Whichever of the two chutes 200 or is used to operate the solenoid control switch 22|) (or 22| as the case may be) every time a coin iswdropped. This change causes the solenoid 229 to be operated each time a coin is dropped and thereby the coins are alternately delivered first to motor chute 209 and next to motor. chute 2| by pivoting of chutes 2,06 Land 201.

It .willbe understood that the coin control .mechanism herein shown and described is merely illustrative of an embodiment designed to perform the various functions desired to give maximum exibility to the operation of the machine. However, the same functions can and preferably may be performed by a series of relays in a more completely electrified control and it will be understood that such relay system is within the scope of my invention and claims directed to this .feature thereof.

The invention in its broader aspects is not limited to the specic mechanisms shown and described but departures may be made therefrom within the scope of the accompanying claims without departing from the principles of .the invention and without sacricing its chief advantages.

What I claim is:

l. In a bottle dispensing machine in combination means for maintaining a column of necked bottles lying on their sides one above the other,

Ameans for successively removing the lowermost vbottle in the column for dispensing, the bottles `above it moving by gravity toward the point of 16 erally like regular cylindrical objects on scl support.

2. In a bottle dispensing machine in combiation means for maintaining a, column of necked bottles lying on their sides one above the other, means for successively removing the lowermost bottle in the column for dispensing-the bottles above it moving by gravity toward the point of removal, a member engaging the bottle necks and projecting to varying extents into lthe path of the bottle necks for imparting a varying gravital restrain to the neck ends of the bottles in the moving column to maintain the bottles moving generally like regular cylindrical objects on such support.

3. In a bottle dispensing machine in combination means for maintaining a column of necked bottles lying on their sides one above the other, meansfor successively removing the lowermost bottleV in the column for dispensing, the bottles Y above it moving by gravity toward the point of removal, and a member projecting to varying extents into the path of the bottle necks for imparting a varying frictional restraint to the neck ends of the bottles in the moving column to maintain the bottles moving generally likeregular cylindrical objects on such support,

4. In a bottle dispensing machine in combination means for maintaining a column of necked bottles lying on their sides one above the other, means for successively removing the lowermost bottle in the column for dispensing, the bottles above it moving by gravity toward the point of removal, and means for imparting a varying restraint to the neck ends of the bottles in the moving column to maintain the bottles moving generally like regular cylindrical objects on such support, said means comprising a member bearing against the surface of the necks of said bottles.

5. In a bottle dispensing machine in combination means for maintaining a column of necked bottles lying on their sides one above the other, means for successively removing the lowermost bottle in the column for dispensing, the bottles above it moving by gravity toward the point of removal, and means for imparting a varying restraint to the neck ends of the bottles in the moving column to maintain the bottles moving generally like regular cylindrical objects on such support, said means comprising a member of nonrectilinear contour lbearing against the surface of the necks of said bottles.

6. In a bottle dispensing machine in combination means for maintaining a column of necked .bottles vlying on their sides one above the other, means for successively removing the lowermost bottle in the column for dispensing, the bottles above it moving by gravity toward the point of removal, and means for imparting a varying restraint to the neck ends of the bottles in the moving column to maintain the bottles moving generally like regular cylindrical objects on such support, said means comprising a guide rail of varying contour bearing against the surface of the necks of said bottles.

'7. In a bottle dispensing machine in combination means for maintaining a column of necked bottles lying on their sides one above the other, means for successively removing the lowermost bottle in the column for dispensing, the bottles above it moving by gravity toward the point of removal, and a series of projections in the path of the bottle necks for successively correcting the tendency of said bottles to depart from a rolling 17 attitude parallel to the general movement of said column.

8. In a bottle dispensing machine in combination means for maintaining a column of necked bottles lying on their sides one above the other, means for successively removing the lowermost bottle in the column for dispensing, the bottles above it moving by gravity toward the point of removal, and means for imparting corrective movements to the neck ends of said bottles to tilt the bottles on their major axes and thereby t maintain them moving like regular cylindrical objects under the inuence of gravity, said means comprising a neck-engaging member having at least one portion projecting farther into the column than other portions thereof.

9. In a bottle dispensing machine in combination a support for a plurality of bottles lying on their sides, said support being inclined to cause said bottles to move by gravity therealong, and means for successively imparting corrective movements to the neck ends of said bottlesto tilt the bottles on their major axes and thereby to maintain them moving like regular cylindrical objects under the influence of gravity,'said means comprising an inclined support for the bottle necks having elevated portions alternating with depressed portions.

10. In a bottle dispensing machine in combination a support for a plurality of bottles lying on their sides, said support being inclined to cause said bottles to move by gravity therealong, and means for imparting a varying restraint to the movement of the neck ends of the bottles as they travel along said support to cause said bottles to travel substantially like regular cylindrical objects on such support, said means comprising a member underlying the necks of said bottles on the support and being of varying height so as to successively raise and lower the necks of the bottles with respect to the plane of said support.

11. In a bottle dispensing machine in combination a support for a plurality of bottles lying on their sides, said support being inclined to cause said bottles to move by gravity therealong, and means for imparting a varying restraint to the movement of the neck ends of the bottles as they travel along said support to cause said bottles to travel substantially like regular cylindrical objects on such support, said means comprising a travel of a bottle in a direction substantially transverse to the axis of the bottle, and means for imparting a, varying restraint to the movement of the neck end of the bottle as it travels along said path to cause the bottle to travel substantially like a regular cylindrical object along said path said last means comprising guide elements of varying contour adapted to be engaged by the neck surface of the bottle.

13. In a bottle dispensing machine, in combination, means defining a path for the guided, gravitational travel of bottles associated in a column with the axes of the bottles substantially parallel, said travel taking place along said path in a direction substantially transverse to the axes of the bottles, and means for imparting a varying restraint to the movement of the neck ends of the bottles as they travel along said path to cause the bottles to travel substantially like regular cylindrical objects along said path, said means comprising a member of non-rectilinear contour t0 be engaged by the surface of the necks of the bottles.

WADE W. BOWMAN.

REFERENCES CITED The following references are of record in the le o1" this patent:

UNITED STATES PATENTS Number Name Date 979,814 Westerbeck Dec. 27, 1910 1,358,388 Neibel Nov. 9, 1920 1,718,102 Bauer June 18, 1929 1,902,612 Blossom et al. Mar. 21, 1933 2,150,863 Morin Mar. 14, 1939 2,233,118 Williams Feb. 25, 1941 2,304,484 Smith Dec. 8, 1942 2,376,561 Smith May 22, 1945 2,376,960 Clem May 29, 1945 2,390,535 Higham Dec. 11, 1945 2,398,543 Lo Cascio et al Apr. 16, 1946 2,407,402 Clem Sept. 10, 1946 2,408,380 Dennis Oct. 1, 1946 

